Babel

Flow and Babel are designed to work great together. It takes just a few steps to set them up together.

If you don't have Babel setup already, you can do that by following this guide.

Once you have Babel setup, install @babel/preset-flow and flow-parser with either Yarn or npm.

yarn add --dev @babel/preset-flow flow-parser
# or
npm install --save-dev @babel/preset-flow flow-parser

Then add the @babel/preset-flow preset and flow-parser/babel-plugin plugin to your Babel config.

{
  "presets": ["@babel/preset-flow"],
  "plugins": ["flow-parser/babel-plugin"]
}

You can read the flow-parser Babel plugin documentation to see how to configure it, including custom parser options.

See Also​